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Specimen Atlas of Research Peptides30 plates · MIT
Side-by-side · Research reference

EpitalonvsSemax

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AHuman-MechanisticDraft8/37 cited
BHuman-MechanisticDraft12/39 cited
Epitalon
Pineal bioregulator · Telomerase activator
5–10 mgPer cycle doseKhavinson 2003
HumanMechanisticKhavinson 2003
HoursHalf-life (est)
SQ or IM · Abdomen · Daily for 10–20 days
Semax
Cognitive enhancer · Russian Pharma
200–600 mcg/doseIntranasalKaplan 2017
HumanMechanisticKaplan 2017
~30 minOnset
Intranasal · 2–3×/day during cognitive demand

01Mechanism of Action

Parameter
Epitalon
Semax
Primary target
Telomerase activity (proposed); pineal melatonin axis modulationKhavinson 2003
BDNF / NGF expression + monoamine modulationKaplan 2017
Pathway
Activation of telomerase reverse transcriptase (hTERT) in somatic cells; pineal-axis modulation supports endogenous melatoninKhavinson 2003
↑ BDNF + NGF synthesis + 5-HT modulation → neuroplasticity + anxiolysis + cognitive enhancementKaplan 2017
Downstream effect
Telomere elongation, improved sleep architecture, reported lifespan extension in aged miceKhavinson 2003
Improved memory + attention; reduced anxiety; neuroprotection in ischemiaKaplan 2017
Feedback intact?
Origin
Synthetic 4-AA peptide derived from epithalamin (a natural pineal extract)Khavinson 2003
Synthetic 7-AA peptide derived from ACTH(4-7) with C-terminal Pro-Gly-Pro stabilising tailKaplan 2017
Antibody development

02Dosage Protocols

Parameter
Epitalon
Semax
Standard dose
5–10 mg / day for 10–20 days, 1–2× per yearKhavinson 2003
Anecdotal community protocol. Russian clinical literature uses similar cycling.
200–600 mcg / dose intranasalKaplan 2017
Frequency
Once daily during a cycle
2–3× per day during cognitive demand
Lower / starter dose
2.5 mg / day
100 mcg / dose
Evidence basis
In-vitro telomerase + Russian clinical trialsKhavinson 2003
Human-mechanistic + Russian clinicalKaplan 2017
Duration
10–20 day cycles, 1–2× per year
10–14 day cycles, repeated PRN
Reconstitution
Bacteriostatic water
Pre-formulated nasal spray (commercial); research vial: bacteriostatic water
Timing
Pre-sleep preferred (pineal alignment)
Morning + early afternoon
Half-life
Hours (estimated)
Short plasma; CNS effect lasts ~3–6 hr

04Side Effects & Safety

Parameter
Epitalon
Semax
Injection site reaction
Mild irritation
Sleep architecture
Improved subjective sleep quality (anecdotal)
Cancer risk
Theoretical via telomerase activation in pre-malignant cells
Long-term safety
Limited Western RCT data
Limited Western RCT data
Pregnancy / OB
Avoid
Avoid
Antibody formation
Not reported
Nasal irritation
Mild burning or congestion (transient)
Sleep disruption
Late-day dosing may interfere with sleep
Headache
Uncommon, transient
Absolute Contraindications
Epitalon
  • ·Pregnancy / breastfeeding
  • ·Active malignancy or pre-malignant state
Semax
  • ·Pregnancy / breastfeeding
Relative Contraindications
Epitalon
  • ·Family history of cancer
Semax
  • ·Active psychiatric instability
  • ·Concurrent strong stimulants

05Administration Protocol

Parameter
Epitalon
Semax
1. Reconstitution
Add 1–2 mL bacteriostatic water to 10 mg vial → 5–10 mg/mL.
Pre-formulated nasal spray (commercial) or research vial reconstituted with bacteriostatic water.
2. Injection site
SQ — abdomen preferred. Rotate sites.
Intranasal — 2–3 sprays per nostril per dose. Tilt head slightly back.
3. Timing
Pre-sleep preferred to align with pineal axis.
Morning + early afternoon. Avoid evening (sleep disruption).
4. Storage
Lyophilised: room temp, light-protected. Reconstituted: refrigerate ≤30 days.
Refrigerate after reconstitution; light-protected.
5. Needle
29–31G, 4–8 mm insulin syringe.
Cycle on/off to avoid neurochemical adaptation.

06Stack Synergy

Epitalon
— no documented stacks
Semax
+ Selank
Moderate
View Selank

Semax (cognitive enhancer, BDNF/NGF) and Selank (anxiolytic + immune) form the canonical Russian "neuro stack" — both intranasal peptide bioregulators with complementary axes. Semax for cognitive demand; Selank for stress mitigation.

Semax
200–600 mcg intranasal · morning + afternoon
Selank
150–300 mcg intranasal · midday + early evening
Primary benefit
Cognitive enhancement + stress mitigation